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In manufacturing environments where "hygiene management" is the top priority, such as in food, beverages, pharmaceuticals, and cosmetics, the selection of rubber components (gaskets, seals) used is extremely important. This is because it is not only about preventing leaks but also about ensuring safety for the human body (compliance with regulations) and significantly reducing the risk of foreign material contamination. A suitable solution to meet such stringent requirements is the "EP-5165-W" developed by Iruma River Rubber Co., Ltd. This is a special grade of white (white) EPDM (ethylene propylene rubber) that is compliant with food hygiene laws and excels in weather resistance and chemical resistance. In this article, we will thoroughly explain why EP-5165-W continues to be chosen in hygiene management settings from the perspectives of "legal compliance," "color advantages," and "basic performance," and we will introduce our solutions at Daiko Co., Ltd., which process and supply this safe material tailored to the shape of our customers' equipment, starting from just one piece. *For detailed content of the column, please refer to the related link. For more information, please download the PDF or feel free to contact us.

In the manufacturing environment of products that enter the human mouth, such as food, beverages, pharmaceuticals, and cosmetics, the safety of "rubber packings" and "gaskets" used in equipment is as important, if not more so, than the safety of the products themselves. If harmful substances were to leach from the rubber and contaminate the products, the trust in the company would collapse instantly. Not an ambiguous "food grade," but truly safe silicone rubber based on "solid evidence" from a public testing organization. That is the "Silicone Rubber Sheet SN-50" from Osaka Rubber Co., Ltd. In this article, we will thoroughly explain why SN-50 has gained absolute trust in the food and medical fields, based on the test report (No. 452-21-A-0055) issued by the Chemical Substance Evaluation and Research Institute (CERI), detailing its legal basis and test results. *For detailed content of the column, please refer to the related links. For more information, please download the PDF or feel free to contact us.

In the manufacturing fields of food, pharmaceuticals, and cosmetics, achieving a balance between "safety (compliance with the Food Sanitation Act)" and "durability (heat and chemical resistance)" is an eternal challenge. While silicone rubber and EPDM are safe and easy to use, they may not withstand high-temperature oils, certain chemicals, or high-pressure steam. This is where "Food Sanitation Act-compliant fluorine rubber IF-900," proudly offered by Iruma River Rubber Co., Ltd., comes into play. IF-900 is a high-grade product that maintains the inherent heat and oil resistance of fluorine rubber while complying with the Food Sanitation Act (Ministry of Health and Welfare Notification No. 370). In this article, we will provide a detailed explanation of the physical properties and resistance data of IF-900 based on the manufacturer's official catalog. We will also introduce our processing solutions at Daiko Co., Ltd. to procure this expensive material in the necessary shapes and quantities without waste. *For more detailed content of the column, please refer to the related links. For more information, feel free to download the PDF or contact us directly.*

In the automotive industry, the reliability of seals for various fluids such as engine oil, coolant, and brake fluid is essential. In particular, seals used in high-temperature and high-pressure environments require durability. Improper material selection can lead to leaks and degradation, potentially resulting in serious accidents. This document provides a list of the compatibility of rubber materials used for automotive seals with various fluids. 【Application Scenarios】 - Engine oil seals - Brake caliper seals - Fuel system seals - Coolant system seals 【Benefits of Implementation】 - Increased longevity of seals through appropriate material selection - Reduced risk of leaks - Optimization of parts replacement cycles - Cost reduction

In product development and technological innovation, "temperature" often stands as an insurmountable barrier. However, there exists a special material that can break through that barrier and enable technologies in areas that were previously deemed impossible. That material is silicone rubber (Si). In this article, we will redefine the essential properties of silicone rubber, demonstrating how it is not merely a "heat-resistant and cold-resistant material," but rather a "solution" that can expand technical limits. Furthermore, we will explain the selection and processing of this special material to elevate it into functional components from the perspective of the specialized trading company Daiko. *For more detailed content of the column, please refer to the related links. For further information, feel free to download the PDF or contact us.*

From industrial machinery to plant piping and building equipment, "rubber gaskets and packing" prevent fluid leaks and fill gaps, serving as extremely important components that support the performance and safety of equipment, despite being inconspicuous. However, even when grouped under the term "rubber," the types vary widely from natural rubber (NR) to nitrile rubber (NBR) and fluorine rubber (FKM), each possessing completely different characteristics (oil resistance, weather resistance, heat resistance, chemical resistance, mechanical strength). If this selection is incorrect, it can lead to serious problems such as "rubber swelling and leaking due to oil," "cracking due to ozone," or "hardening due to heat resulting in loss of sealing capability." In this article, we will thoroughly compare and explain the characteristics of nine major types of rubber materials, providing a "selection guide" to help you choose the right product for your application. *For detailed content of the column, please refer to the PDF. For more information, feel free to contact us.*

Processing Case Overview Product Name: CR Rubber Frame-Shaped Gasket Dimensions: Outer dimension approximately 330 square / Inner diameter with opening / Multiple mounting holes This case is an example of processing a CR rubber frame-shaped gasket used for openings in equipment. The shape includes corners on both the outer and inner perimeters, with mounting holes arranged around it, requiring dimensional reproducibility and assembly compatibility. By adopting water jet processing, which allows for machining according to the drawings without using a die, stable quality manufacturing has been achieved. Product Features (CR Rubber) Neoprene rubber (CR) is a rubber material that has a well-balanced combination of weather resistance, oil resistance, and heat resistance. It is particularly excellent in aging resistance and ozone resistance, making it strong for long-term outdoor use. It also possesses flame retardancy and mechanical strength, and is used in a wide range of applications such as construction gaskets, wire coatings, and industrial components.

■Overview of Processing Example Product Name: Inspection Port Gasket Dimensions: 146.35W × 270L (Opening Angle 176°, Plate Thickness 5t, Mounting Holes φ8・φ10) This processing example is for a gasket designed for the inspection port of equipment. To ensure dimensional accuracy and shape reproducibility for the specifications that include curved contours and mounting holes, water jet processing has been adopted.

■Overview of Processing Example Product Name: Washi Adhesive Gasket Dimensions: As specified in the drawing This processing example involves the production of a washi adhesive gasket used for sealing applications in equipment housings. The outer and inner periphery processing in a frame shape was specified, requiring positioning accuracy and stable reproducibility during assembly. To avoid thermal effects and material deformation, water jet processing was selected, achieving a balance between dimensional accuracy and assembly compatibility.